package com.zz.shop.web.filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

@WebFilter(value = "/*")
public class Filter01_Charset implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest req= (HttpServletRequest) servletRequest;
        HttpServletResponse resp= (HttpServletResponse) servletResponse;
        if (check(req.getRequestURI())) {
            req.setCharacterEncoding("utf-8");
            resp.setContentType("text/html;charset=utf-8");
        }
        filterChain.doFilter(req,resp);
    }

    public boolean check(String path){
        List<String> list= Arrays.asList("/",".html",".css",".js",".png",".jpg");
        for (String s : list) {
            if (path.endsWith(s)) {
                return false;
            }
        }
        return true;
    }

    @Override
    public void destroy() {

    }
}
